Results 31 to 40 of about 1,551,520 (284)
Entropy-Constrained Scalar Quantization with a Lossy-Compressed Bit
Entropy, 2016 We consider the compression of a continuous real-valued source X using scalar quantizers and average squared error distortion D. Using lossless compression of the quantizer’s output, Gish and Pierce showed that uniform quantizing yields the smallest ...
Melanie F. Pradier +2 more
doaj +1 more source
IEEE Access, 2016 The recently proposed unary error correction (UEC) and Elias gamma error correction (EGEC) codes facilitate the near-capacity joint source and channel coding (JSCC) of symbol values selected from large alphabets at a low complexity.
Matthew F. Brejza +6 more
doaj +1 more source
A Universal Random Coding Ensemble for Sample-Wise Lossy Compression
Entropy, 2023 We propose a universal ensemble for the random selection of rate–distortion codes which is asymptotically optimal in a sample-wise sense. According to this ensemble, each reproduction vector, x^, is selected independently at random under the probability ...
Neri Merhav
doaj +1 more source
A Low-Complexity and Asymptotically Optimal Coding Strategy for Gaussian Vector Sources
Entropy, 2019 In this paper, we present a low-complexity coding strategy to encode (compress) finite-length data blocks of Gaussian vector sources. We show that for large enough data blocks of a Gaussian asymptotically wide sense stationary (AWSS) vector source, the ...
Marta Zárraga-Rodríguez +2 more
doaj +1 more source
Information Bottleneck for a Rayleigh Fading MIMO Channel with an Oblivious Relay
Information, 2021 This paper considers the information bottleneck (IB) problem of a Rayleigh fading multiple-input multiple-out (MIMO) channel with an oblivious relay. The relay is constrained to operating without knowledge of the codebooks, i.e., it performs oblivious ...
Hao Xu +3 more
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Adolescent siblings of children with cancer are at elevated risk for psychosocial problems. Unfortunately, various barriers such as limited family time and resources, conflicting schedules, and psychosocial staffing constraints at cancer centers hinder sibling access to support.
Christina M. Amaro +10 more
wiley +1 more source
On the Performance of the Cache Coding Protocol
Information, 2018 Network coding approaches typically consider an unrestricted recoding of coded packets in the relay nodes to increase performance. However, this can expose the system to pollution attacks that cannot be detected during transmission, until the receivers ...
Behnaz Maboudi +3 more
doaj +1 more source
On Zero-Error Source Coding with Feedback [PDF]
, 2010 We consider the problem of zero error source coding with limited feedback when side information is present at the receiver. First, we derive an achievable rate region for arbitrary joint distributions on the source and the side information.
Bakshi, Mayank, Effros, MIchelle
core +1 more source
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source
DeepVoCoder: A CNN Model for Compression and Coding of Narrow Band Speech
IEEE Access, 2019 This paper proposes a convolutional neural network (CNN)-based encoder model to compress and code speech signal directly from raw input speech. Although the model can synthesize wideband speech by implicit bandwidth extension, narrowband is preferred for
Hacer Yalim Keles +3 more
doaj +1 more source